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Finding the Fourth Proportional to 115,456.68, 159,294.06 and 67,712.04

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Solution

The fourth proportional to 115,456.68, 159,294.06 and 67,712.04 is: 93,421.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,456.68 : 159,294.06 = 67,712.04 : x
  2. Step 2: Convert to fraction form
    115,456.68/159,294.06 = 67,712.04/x
  3. Step 3: Cross multiply
    115,456.68x = 159,294.06 × 67,712.04
  4. Step 4: Simplify right side
    115,456.68x = 10,786,125,762.48
  5. Step 5: Solve for x
    x = 10,786,125,762.48/115,456.68
  6. Step 6: Final answer
    x = 93,421.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.